Well pump runs continuly. I though I mingt have a leek somewhere so I turned off electric power and after 3 hrs.still had water in house. I figured if I had a leek in plumbing that I would have lost all pressure during this time. What possible cause can I check for now? This is a jet=pump with small blader tank sitting on top.

What does your pressure gauge say while the pump is running.

When you shut the power off does the gage drop any? Let me know. Tom